钛在模拟空间环境下的摩擦学性能

郭纯<sup>1; 2</sup>; 陈建敏<sup>2</sup>; 姚润钢<sup>1</sup>; 周健松<sup>2</sup>; 俞友军<sup>2</sup>

引用本文:	郭纯，陈建敏，姚润钢，周健松，俞友军.钛在模拟空间环境下的摩擦学性能[J].中国表面工程,2012,25(3):86~91
	GUO Chun, CHEN Jian-min , YAO Run-gang, ZHOU Jian-song, Yu You-jun.Tribological Properties of Titanium in Simulated Space Environment[J].China Surface Engineering,2012,25(3):86~91

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钛在模拟空间环境下的摩擦学性能
郭纯，陈建敏，姚润钢，周健松，俞友军^1,2
1.中国船舶重工集团公司第七二五研究所，河南洛阳 471039;2.中国科学院兰州化学物理研究所固体润滑国家重点实验室，兰州 730000

摘要:

为了明确钛及其合金在空间环境下的摩擦磨损行为，利用中科院兰州化学物理研究所自主研发的空间摩擦学试验系统对钛在模拟空间环境（高真空、原子氧和紫外辐照）下的摩擦磨损性能进行了研究。用X光电子能谱仪（XPS）分析了钛在原子氧辐照后表面元素价态的变化。采用扫描电镜（SEM）对磨损后试样和对偶钢球的磨痕形貌进行分析，利用能量色散光谱仪（EDS）对钢球磨痕元素面分布进行分析，揭示了钛在模拟空间环境下的摩擦磨损失效机理。结果表明：钛在原子氧辐照后表面发生了氧化；钛在大气环境条件下的摩擦磨损机理主要为磨粒磨损和粘着磨损，在高真空、原子氧和紫外辐照模拟空间环境下的磨损机理主要为严重的粘着磨损、磨粒磨损和塑性变形。相比于大气环境条件下，钛在高真空、原子氧和紫外辐照下的粘着磨损加剧，摩擦因数增加。

关键词: 钛空间摩擦磨损

DOI：

分类号:

基金项目:国家自然科学基金（51045004）

Tribological Properties of Titanium in Simulated Space Environment

GUO Chun, CHEN Jian-min , YAO Run-gang, ZHOU Jian-song, Yu You-jun^1,2

1. Luoyang Ship Material Research Institute, Luoyang 471039, Henan;2. State Key Laboratory of Solid Lubrication, Lanzhou Institute of Chemical Physics, Chinese Academy of Sciences, Lanzhou 730000

Abstract:

The effects of simulated space environment on tribological properties of titanium were evaluated by the space tribological test system that was made by the State Key Laboratory of Solid Lubrication (LSL) in order to reveal the wear mechanism of titanium under harsh space environment. The simulated space environment included ultrahigh vacuum, atomic oxygen, and ultraviolet irradiation.The surface composition of titanium after atomic oxygen irradiation was analyzed by Xray photonelectron spectroscopy (XPS). The worn morphologies, composition of titanium and counterpart GCr15 steel balls were characterized by scanning electron microscopy (SEM) and energy dispersive spectroscopy (EDS). The results show that titanium is oxidized after atomic oxygen irradiation; titanium sliding against GCr15 steel balls under atmospheric environment is dominated by abrasive and adhesive wear, while server adhesive wear, abrasive wear and plastic deformation under ultrahigh vacuum, atomic oxygen and ultraviolet irradiation environment.

Key words: titanium (Ti) space friction wear